package com.cyx.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.cyx.reggie.common.CustomException;
import com.cyx.reggie.dto.DishDto;
import com.cyx.reggie.dto.SetmealDto;
import com.cyx.reggie.entity.DishFlavor;
import com.cyx.reggie.entity.Setmeal;
import com.cyx.reggie.entity.SetmealDish;
import com.cyx.reggie.mapper.SetmeaMapper;
import com.cyx.reggie.service.SetmealDishService;
import com.cyx.reggie.service.SetmealService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.RequestMapping;

import java.util.List;
import java.util.stream.Collectors;

/**
 * @author 陈彦西
 * @date 2024/7/8 下午4:25
 */
@Service
@Slf4j
@Transactional
public class SetmealServiceImpl extends ServiceImpl<SetmeaMapper, Setmeal>implements SetmealService {
    @Autowired
    private SetmealDishService setmealDishService;
    @Autowired
    private SetmealService setmealService;

    /**
     * 新增套餐，同时需要保存套餐和菜品的关联关系
     *
     * @param setmealDto
     */
    @Transactional
    @Override
    public void saveWithDish(SetmealDto setmealDto) {
        //保存套餐的基本信息，操作setmeal,执行insert操作
        this.save(setmealDto);
        List<SetmealDish> setmealDishes = setmealDto.getSetmealDishes();
        setmealDishes.stream().map((item) -> {
            item.setSetmealId(setmealDto.getId());
            return item;
        }).collect(Collectors.toList());

        //保存套餐和菜品的关联信息，操作setmeal_dish,执行insert操作
        setmealDishService.saveBatch(setmealDishes);
    }
        /**
         * 删除套餐，同时需要删除套餐和菜品的关联数据
         * @param ids
         */
    @Override
    public void removeWithDish(List<Long> ids) {
        //select count(*) from setmeal where id in (1,2,3)and status=1
        //查询套餐状态，确定是否可用删除
        LambdaQueryWrapper<Setmeal> queryWrapper = new LambdaQueryWrapper<Setmeal>();
        queryWrapper.in(Setmeal::getId,ids);
        queryWrapper.eq(Setmeal::getStatus,1);
        int count=this.count(queryWrapper);
        if (count>0){
            //如果不能删除，抛出一个业务异常
            throw new CustomException("套餐正在售卖中，不能删除");
        }
        //如果可以删除，先删除套餐中的数据
        this.removeByIds(ids);


        //delete from setmeal_dish where setmeal_id in（1，2，3）
        LambdaQueryWrapper<SetmealDish>lambdaQueryWrapper=new LambdaQueryWrapper<>();
        lambdaQueryWrapper.in(SetmealDish::getSetmealId,ids);
        //删除关系表中的数据---setmeal_dish
        setmealDishService.remove(lambdaQueryWrapper);
        //还有一个功能开发停售，点击停售以后可以进行删除


    }

    /**
     * 修改菜品
     * @param setmealDto
     */
    @Override
    @Transactional
    public void updateWithSetmeal(SetmealDto setmealDto) {
        //更新表基本信息
        this.updateById(setmealDto);
        //清理当前套餐对应数据
        LambdaQueryWrapper<SetmealDish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(SetmealDish::getSetmealId, setmealDto.getId());
        setmealDishService.remove(queryWrapper);
        //添加当前提交过来的菜品数据- insert
        List<SetmealDish> dishes = setmealDto.getSetmealDishes();
        for (SetmealDish dish : dishes) {
            if (dish == null) {
                throw new IllegalArgumentException("传入的参数不能为null");
            }
            dish.setSetmealId(setmealDto.getId());
            setmealDishService.saveOrUpdate(dish);
        }

    }


}
